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<p class='vspace'></p><p><a class='wikilink' href='Ethernet.html'>Ethernet</a> : <em>UDP.remotePort()</em>
</p>
<p class='vspace'></p><h4>Description</h4>
<p>Gets the port of the remote UDP connection. 
</p>
<p class='vspace'></p><p>This function must be called after <a class='wikilink' href='EthernetUDPParsePacket.html'>UDP.parsePacket()</a>.
</p>
<p class='vspace'></p><h4>Syntax</h4>
<p>UDP.remotePort(); <br />
</p><h4>Parameters</h4>
<p>None
</p>
<p class='vspace'></p><h4>Returns</h4>
<p>int : the port of the UDP connection to a remote host
</p>
<p class='vspace'></p><h4>Example</h4>
<p>
<div class='sourceblock ' id='sourceblock1'>
  <div class='sourceblocktext'><div class="arduino"><span class="co2">#include &lt;SPI.h&gt; &nbsp; &nbsp; &nbsp; &nbsp;</span><br />
<span class="co2">#include &lt;Ethernet.h&gt;</span><br />
<span class="co2">#include &lt;EthernetUdp.h&gt;</span><br />
<br />
<span class="co1">// Enter a MAC address and IP address for your controller below.</span><br />
<span class="co1">// The IP address will be dependent on your local network:</span><br />
<span class="kw1">byte</span> mac<span class="br0">&#91;</span><span class="br0">&#93;</span> <span class="sy0">=</span> <span class="br0">&#123;</span> &nbsp;<br />
&nbsp; <span class="nu12">0xDE</span><span class="sy0">,</span> <span class="nu12">0xAD</span><span class="sy0">,</span> <span class="nu12">0xBE</span><span class="sy0">,</span> <span class="nu12">0xEF</span><span class="sy0">,</span> <span class="nu12">0xFE</span><span class="sy0">,</span> <span class="nu12">0xED</span> <span class="br0">&#125;</span><span class="sy0">;</span><br />
IPAddress ip<span class="br0">&#40;</span><span class="nu0">192</span><span class="sy0">,</span> <span class="nu0">168</span><span class="sy0">,</span> <span class="nu0">1</span><span class="sy0">,</span> <span class="nu0">177</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
<br />
<span class="kw1">unsigned</span> <span class="kw1">int</span> localPort <span class="sy0">=</span> <span class="nu0">8888</span><span class="sy0">;</span> &nbsp; &nbsp; &nbsp;<span class="co1">// local port to listen on</span><br />
<br />
<span class="co1">// An EthernetUDP instance to let us send and receive packets over UDP</span><br />
EthernetUDP Udp<span class="sy0">;</span><br />
<br />
<span class="kw1">char</span> packetBuffer<span class="br0">&#91;</span>UDP_TX_PACKET_MAX_SIZE<span class="br0">&#93;</span><span class="sy0">;</span> <span class="co1">//buffer to hold incoming packet,</span><br />
<br />
<span class="kw1">void</span> <span class="kw3">setup</span><span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="br0">&#123;</span><br />
&nbsp; <span class="co1">// start the Ethernet and UDP:</span><br />
&nbsp; Ethernet.<span class="kw1">begin</span><span class="br0">&#40;</span>mac<span class="sy0">,</span>ip<span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; Udp.<span class="kw1">begin</span><span class="br0">&#40;</span>localPort<span class="br0">&#41;</span><span class="sy0">;</span><br />
<br />
<span class="br0">&#125;</span><br />
<br />
<span class="kw1">void</span> <span class="kw3">loop</span><span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="br0">&#123;</span><br />
<br />
&nbsp; <span class="kw1">int</span> packetSize <span class="sy0">=</span> Udp.<span class="me1">parsePacket</span><span class="br0">&#40;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; <span class="kw1">if</span><span class="br0">&#40;</span>packetSize<span class="br0">&#41;</span><br />
&nbsp; <span class="br0">&#123;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">&#40;</span><span class="st0">&quot;Received packet of size &quot;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>packetSize<span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">&#40;</span><span class="st0">&quot;From &quot;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; IPAddress remote <span class="sy0">=</span> Udp.<span class="me1">remoteIP</span><span class="br0">&#40;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; <span class="kw1">for</span> <span class="br0">&#40;</span><span class="kw1">int</span> i <span class="sy0">=</span><span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0">&lt;</span> <span class="nu0">4</span><span class="sy0">;</span> i<span class="sy0">++</span><span class="br0">&#41;</span><br />
&nbsp; &nbsp; <span class="br0">&#123;</span><br />
&nbsp; &nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">&#40;</span>remote<span class="br0">&#91;</span>i<span class="br0">&#93;</span><span class="sy0">,</span> <span class="kw2">DEC</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; &nbsp; <span class="kw1">if</span> <span class="br0">&#40;</span>i <span class="sy0">&lt;</span> <span class="nu0">3</span><span class="br0">&#41;</span><br />
&nbsp; &nbsp; &nbsp; <span class="br0">&#123;</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">&#40;</span><span class="st0">&quot;.&quot;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; &nbsp; <span class="br0">&#125;</span><br />
&nbsp; &nbsp; <span class="br0">&#125;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">print</span><span class="br0">&#40;</span><span class="st0">&quot;, port &quot;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>Udp.<span class="me1">remotePort</span><span class="br0">&#40;</span><span class="br0">&#41;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
<br />
&nbsp; &nbsp; <span class="co1">// read the packet into packetBufffer</span><br />
&nbsp; &nbsp; Udp.<span class="kw1">read</span><span class="br0">&#40;</span>packetBuffer<span class="sy0">,</span>UDP_TX_PACKET_MAX_SIZE<span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span><span class="st0">&quot;Contents:&quot;</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp; &nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>packetBuffer<span class="br0">&#41;</span><span class="sy0">;</span><br />
&nbsp;<span class="br0">&#125;</span><br />
<span class="br0">&#125;</span><br />
&nbsp;</div></div>
  <div class='sourceblocklink'><a href='#' type='text/plain'>[Get Code]</a></div>
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